78468811886487 has 16 divisors (see below), whose sum is σ = 120850362692352. Its totient is φ = 44759393589120.

The previous prime is 78468811886483. The next prime is 78468811886557.

78468811886487 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78468811886487 - 2² = 78468811886483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78468811886483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69936551923 + ... + 69936553044.

It is an arithmetic number, because the mean of its divisors is an integer number (7553147668272).

Almost surely, 2^{78468811886487} is an apocalyptic number.

78468811886487 is a deficient number, since it is larger than the sum of its proper divisors (42381550805865).

78468811886487 is a wasteful number, since it uses less digits than its factorization.

78468811886487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139873104998.

The product of its digits is 7398752256, while the sum is 84.

The spelling of 78468811886487 in words is "seventy-eight trillion, four hundred sixty-eight billion, eight hundred eleven million, eight hundred eighty-six thousand, four hundred eighty-seven".